WO2023281663A1 - Scada web hmi client device and scada web hmi system - Google Patents

Scada web hmi client device and scada web hmi system Download PDF

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Publication number
WO2023281663A1
WO2023281663A1 PCT/JP2021/025635 JP2021025635W WO2023281663A1 WO 2023281663 A1 WO2023281663 A1 WO 2023281663A1 JP 2021025635 W JP2021025635 W JP 2021025635W WO 2023281663 A1 WO2023281663 A1 WO 2023281663A1
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WO
WIPO (PCT)
Prior art keywords
web browser
hmi
web
hmi screen
screen
Prior art date
Application number
PCT/JP2021/025635
Other languages
French (fr)
Japanese (ja)
Inventor
亮 清水
章 野島
伸夫 清水
Original Assignee
東芝三菱電機産業システム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東芝三菱電機産業システム株式会社 filed Critical 東芝三菱電機産業システム株式会社
Priority to US18/007,487 priority Critical patent/US20230280724A1/en
Priority to CN202180057369.4A priority patent/CN116034338A/en
Priority to PCT/JP2021/025635 priority patent/WO2023281663A1/en
Priority to JP2023532952A priority patent/JP7478925B2/en
Priority to TW111125583A priority patent/TW202307640A/en
Publication of WO2023281663A1 publication Critical patent/WO2023281663A1/en

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/4183—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by data acquisition, e.g. workpiece identification
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/31—From computer integrated manufacturing till monitoring
    • G05B2219/31467—Display of operating conditions of machines, workcells, selected programs
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/32—Operator till task planning
    • G05B2219/32404—Scada supervisory control and data acquisition

Definitions

  • the present invention relates to a SCADA Web HMI client device and a SCADA Web HMI system.
  • SCADA Supervisory Control And Data Acquisition
  • Social infrastructure systems include steel rolling systems, power transmission and transformation systems, water and sewage treatment systems, building management systems, and road systems.
  • SCADA is a type of industrial control system that performs system monitoring, process control, and data collection by computer. SCADA requires responsiveness (real-time capability) matching the processing performance of the system.
  • SCADA generally consists of the following subsystems.
  • HMI Human Machine Interface
  • An HMI is a mechanism that presents monitored device data to an operator and allows the operator to monitor and control the monitored device.
  • Supervisory Control System The supervisory control system is composed of a Programmable Logic Controller (PLC) or the like. The supervisory control system collects data of monitored devices and sends control commands to the monitored devices.
  • PLC Programmable Logic Controller
  • RIO Remote Input Output
  • the remote input/output device connects to a sensor installed in the monitoring target device, converts the signal of the sensor into digital data, and sends the digital data to the supervisory control system.
  • Communication infrastructure The communication infrastructure connects the supervisory control system and remote input/output devices.
  • Patent Document 1 discloses a system comprising an HMI client device and an HMI server device.
  • the HMI server device transmits the data received from the PLC to the HMI client device.
  • the HMI client device has a computer main body, an input device such as a keyboard and a mouse, and a monitor, and displays one HMI screen on the monitor.
  • an HMI screen can be realized as a web application that operates on a web browser.
  • two monitors a large monitor and a small desktop monitor, can be connected to one HMI client device, and two web browsers can be executed and displayed on each monitor.
  • one HMI client device has one set of input devices (keyboard and mouse), and two web browsers are not operated simultaneously.
  • the HMI screen is displayed in an inoperable state on a large monitor for monitoring by a large number of people, and the HMI screen is displayed in an operable state on a small desktop monitor for operator operation. may be desirable.
  • the present invention has been made to solve the above-described problems, and sets the operation authority of each HMI screen for each web browser so that the same HMI screen can be displayed in the first web browser and displayed in the second web browser. It is an object of the web browser to provide a SCADA web HMI client device and a SCADA web HMI system that can be implemented on a single computer for operation.
  • the first aspect relates to SCADA Web HMI client devices and SCADA Web HMI systems.
  • the SCADA web HMI system comprises an HMI server device and an HMI client device.
  • the HMI server device transmits and receives signals relating to the field devices that make up the industrial plant to and from the programmable logic controller, and runs a web server.
  • HMI client devices run multiple web browsers that send and receive the signals via the web server.
  • the HMI client device comprises a processor, a first monitor and a second monitor.
  • the processor running a first web browser that renders an HMI screen displayed on the first monitor for monitoring and controlling the industrial plant; running a second web browser displayed on the second monitor and rendering the HMI screen; obtaining from the web server an operation authority table that determines whether or not the HMI screen can be operated for each web browser; if the first web browser is not permitted to operate the HMI screen in the operation authority table, rendering the operation parts arranged on the HMI screen of the first web browser in an inoperable state; In the operation authority table, when the second web browser is permitted to operate the HMI screen, the operation parts arranged on the HMI screen of the second web browser are rendered in an operable state. Configured.
  • the second aspect further has the following features in addition to the first aspect.
  • the processor changing the shape or color of the mouse pointer from the inoperable state to the operable state when the operable part is in an operable state and the mouse pointer is placed on the operable part; Further, when the operation part is in an inoperable state, the shape or color of the mouse pointer is not changed while the operation part is in an inoperable state even if the mouse pointer is placed on the operation part.
  • the third aspect further has the following features in addition to the first or second aspect.
  • the processor displaying on the HMI screen an operation right identification part indicating whether or not the HMI screen can be operated; drawing the operation authority identification part arranged on the HMI screen of the first web browser in an operation prohibited color when the first web browser is not permitted to operate the HMI screen in the operation authority table;
  • the operation authority identification part arranged on the HMI screen of the second web browser is drawn in an operation permission color.
  • the fourth aspect further has the following features in addition to any one of the first to third aspects.
  • the processor When restarting the first web browser after terminating it, the first web browser is displayed on the first monitor at a predetermined initial position and initial size regardless of the position and size when the first web browser is terminated. display and When restarting the second web browser after terminating the second web browser, the second web browser is displayed on the second monitor at a predetermined initial position and initial size regardless of the position and size of the second web browser when the second web browser is terminated. further configured to display.
  • the operation authority of each HMI screen is set for each web browser, and the same HMI screen is used for display in the first web browser and for operation in the second web browser. It can be implemented in the client device.
  • the mouse pointer when placed on the operation part is drawn with different representations depending on whether or not the user has the operation right. Therefore, it becomes easier for the operator to identify whether or not he/she has the right to operate the web browser that he or she is currently operating.
  • the color of the operation authority identification part indicating whether or not the HMI screen can be operated is changed according to the presence or absence of the operation authority of the web browser. Therefore, it becomes easier for the operator to identify whether or not he/she has the right to operate the web browser.
  • the web browser can be displayed on the default monitor in a predetermined initial position and initial size regardless of the position and size when the web browser is terminated. Therefore, even if the web browser is operated for some reason, the web browser can be easily restored to the operating state.
  • FIG. 1 is a diagram for explaining a configuration example of a SCADA web HMI system according to an embodiment of the present invention
  • FIG. 3 is a block diagram illustrating an outline of functions of an HMI server device and an HMI client device according to the embodiment of the present invention
  • FIG. It is a figure which shows an example of the operation authority table which concerns on Embodiment 1 of this invention.
  • 4 is a flowchart for explaining a processing example of the HMI client device 3 according to Embodiment 1 of the present invention;
  • FIG. 3 is a block diagram illustrating an outline of functions of an HMI server device and an HMI client device according to the embodiment of the present invention
  • FIG. It is a figure which shows an example of the operation authority table which concerns on Embodiment 1 of this invention
  • 4 is a flowchart for explaining a processing example of the HMI client device 3 according to Embodiment 1 of the present invention
  • FIG. 10 is a diagram showing an example of an HMI screen in an inoperable state rendered on a first web browser and an example of an HMI screen in an operable state rendered in a second web browser;
  • 3 is a block diagram showing an example hardware configuration of an HMI server device and an HMI client device;
  • FIG. 1 is a diagram for explaining a configuration example of a SCADA Web HMI system according to an embodiment.
  • the SCADA web HMI system shown in FIG. 1 comprises a PLC 1, an HMI server device 2, and an HMI client device 3 interconnected via a computer network 4.
  • FIG. The computer network 4 is, for example, Ethernet (registered trademark).
  • the PLC 1 connects to monitored devices (field device groups (including actuators and sensors) that make up an industrial plant) via a control network (not shown). PLC 1 periodically transmits packets containing block data to computer network 4 by multicast or broadcast. Block data is a set of PLC signals. One block data includes tens to hundreds of PLC signals. Types of PLC signals include input/output signals (including actuator control signals and sensor detection signals) and alarm signals. The PLC 1 also receives control signals relating to the monitored device from the HMI server device 2 .
  • FIG. 2 is a block diagram illustrating an overview of functions possessed by the HMI server device 2 and the HMI client device 3. As shown in FIG.
  • the HMI server device 2 transmits and receives signals related to field devices that make up the industrial plant to and from the programmable logic controller, and runs a web server.
  • the HMI server device 2 includes a processor 61 that executes various processes and a memory 62 that stores various information, as shown in FIG. 6, which will be described later.
  • the processor 61 executes the programs stored in the memory 62 so that the processor 61 functions as the PLC signal processing section 20 and the web server processing section 21 .
  • the PLC signal processing unit 20 and the web server processing unit 21 can mutually transmit and receive data through inter-process communication.
  • the PLC signal processing unit 20 periodically transmits the PLC signal received from the PLC 1 to each web browser 6 (web browser processing unit 11) via the web server processing unit 21. Also, the PLC signal processing unit 20 transmits control signals received from each web browser 6 via the web server processing unit 21 to the PLC 1 .
  • the web server processing unit 21 can communicate with each web browser 6 (web browser processing unit 11) of the HMI client device 3 using HTTP (Hypertext Transfer Protocol), HTTPS (Hypertext Transfer Protocol Secure), and WebSocket.
  • the web server processing unit 21 transmits content in response to requests from each web browser 6 (web browser processing unit 11).
  • the contents include an HTML file (not shown), an SVG (Scalable Vector Graphics) file 25 for each HMI screen, a parts library 26 describing operations for each part type, and an operation authority table 27.
  • the parts library 26 contains a set of scripts describing actions for each part type.
  • a script is a JavaScript (registered trademark) program defined for each part type.
  • the script can be executed on each web browser 6 given a parameter value (for example, presence/absence of operation authority defined in the operation authority table 27) as necessary.
  • the operation right table 27 is a table that defines whether each web browser 6 has the right to operate each HMI screen 7 (whether the operation is permitted) or not (whether the operation is permitted).
  • FIG. 3 is a diagram showing an example of the operation authority table 27 according to this embodiment.
  • "G10" to "G14" are the screen names of the respective HMI screens 7,
  • "HMI1_1” is the browser name of the first web browser 6a
  • "HMI1_2” is the browser name of the second web browser 6b.
  • the browser name is a combination of the device name of the computer and the monitor number.
  • the first web browser 6a (HMI1_1) does not have the right to operate the HMI screen (G10).
  • the second web browser 6b (HMI1_2) has the right to operate the HMI screen (G10).
  • the HMI client device 3 includes a processing circuit 10 (including a processor 71 for executing various processes and a memory 72 for storing various information shown in FIG. 6, which will be described later), a plurality of monitors 5 (a first monitor 5a, a second monitor 5b).
  • the processor 71 functions as the web browser processing unit 11 by executing the program stored in the memory 72 .
  • the web browser processing unit 11 is executed for each web browser 6.
  • the web browser 6 renders an HMI screen 7 for monitoring and controlling the industrial plant.
  • the HMI screen 7 is switched to another HMI screen 7 by operator's operation.
  • a plurality of parts are arranged on the HMI screen 7 .
  • the parts include, for example, operation parts for transmitting control signals to the PLC 1 according to operator's operations, display parts whose display state (numerical value, character, color, shape) changes according to the received PLC signal, and other HMI It includes a screen transition part for switching to a screen, an operation right identification part such as an operation right lamp whose color changes according to the presence or absence of the operation right, and the like.
  • Each web browser 6 (web browser processing unit 11) acquires the above-mentioned HTML file, SVG file 25, parts library 26, operation authority table 27, etc. from the web server processing unit 21 when it is started. Based on these, the web browser 6 draws the HMI screen 7 on which the parts are arranged. Also, each web browser 6 is executed in a mode that does not use a cache in order to always obtain the latest files from the web server processing unit 21 when activated.
  • the web browser processing unit 11 includes a starting position processing unit 12, a screen operation authority processing unit 13, and a parts type processing unit 14.
  • the starting position processing unit 12 displays the web browser 6 at a predetermined initial position and initial size on the default monitor 5 regardless of the position and size of the web browser 6 when it is terminated. For example, if the first web browser 6a is terminated and then restarted, the first web browser 6a is displayed in full screen on the first monitor 5a. Similarly, when restarting the second web browser 6b after terminating it, the second web browser 6b is displayed in full screen on the second monitor 5b. According to this, even if the web browser is operated out of operation for some reason, the web browser 6 can be easily restored to the operating state.
  • the screen operation authority processing unit 13 reads the operation authority table 27 acquired from the HMI server device 2 and determines whether or not each web browser 6 has the operation authority for each HMI screen 7 .
  • the parts type processing unit 14 executes a script for each part type contained in the parts library 26 described above, according to the parts type of the parts arranged on the HMI screen 7 .
  • operation parts and operation authority identification parts whose actions change depending on the presence or absence of the operation authority (parameter value) passed to the script will be described here.
  • operation parts if the web browser 6 is not permitted to operate the HMI screen 7 in the operation authority table 27, the operation parts arranged on the HMI screen 7 of the web browser 6 are rendered in an inoperable state. Further, when the web browser 6 is permitted to operate the HMI screen 7 in the operation authority table 27, the operation parts arranged on the HMI screen 7 of the web browser 6 are drawn in an operable state.
  • the operation part accepts the operator's execution operation (for example, mouse click) and transmits a control signal corresponding to the operation to the HMI server device 2.
  • the operation part does not accept the operator's execution operation.
  • mouseover processing differs between the operable state and the non-operable state.
  • the operable state when the mouse pointer is placed on the operable part, the shape or color of the mouse pointer changes from the inoperable state to the operable state.
  • the inoperable state the shape or color of the mouse pointer remains in the inoperable state even if the mouse pointer is placed on the operation part. According to this, the mouse pointer when placed on the operating part is drawn with different representations depending on whether or not the user has the right to operate. Therefore, the operator can easily identify whether or not he/she has the right to operate the web browser 6 that he or she is currently operating.
  • the operation authority identification parts (operation authority lamps) if the operation authority table 27 does not allow the web browser 6 to operate the HMI screen 7, the operation authority identification parts arranged on the HMI screen 7 of the web browser 6 are prohibited from being operated. drawn in color.
  • the operation prohibited color is red, for example.
  • the operation authority identification parts arranged on the HMI screen 7 of the web browser 6 are drawn in an operation permitted color.
  • the operation permission color is green, for example. According to this, the color of the operation authority identification part indicating whether or not the operation of the HMI screen 7 is permitted is changed according to the presence or absence of the operation authority of the web browser 6 . Therefore, the operator can easily identify whether or not he/she has the right to operate the web browser 6 .
  • FIG. 3 is a diagram showing an example of the operation authority table 27 described above.
  • FIG. 4 is a flowchart for explaining a processing example of the HMI client device 3.
  • FIG. FIG. 5 shows an example of an HMI screen 7 in an inoperable state drawn on the first web browser 6a and an example of an HMI screen 7 in an operable state drawn on the second web browser 6b.
  • step S100 of FIG. 4 the HMI client device 3 executes the web browser 6.
  • FIG. The web browser processing unit 11 displays the web browser 6 on the default monitor 5 at a predetermined initial position and initial size regardless of the position and size when the web browser 6 is terminated.
  • the first web browser 6a is displayed in full screen on the first monitor 5a
  • the second web browser 6b is displayed in full screen on the second monitor 5b.
  • each web browser 6 acquires content from the HMI server device 2 .
  • the content includes the HTML file, SVG file 25, parts library 26, and operation authority table 27 described above. It is sufficient to obtain the parts library 26 and the operation authority table 27 only when the web browser 6 is activated.
  • the example shown in FIG. 5 displays the same HMI screen (G10) on the first web browser 6a and the second web browser 6b, and each web browser 6 acquires the same content.
  • each web browser 6 processes the operation parts (operation buttons 30 in FIG. 5) arranged on the HMI screen 7.
  • FIG. The web browser processing unit 11 determines whether or not the web browser 6 that draws the HMI screen 7 on which the operation parts are arranged has the right to operate the HMI screen 7 (steps S120 and S130). When there is the operation right, the parts type processing unit 14 draws the operation parts in an operable state (step S140). On the other hand, if there is no operation authority, the parts type processing unit 14 draws the operation parts in an operation-disabled state (step S150). In the example shown in FIG.
  • operation of the HMI screen (G10) in the first web browser (HMI1_1) is not permitted (no operation authority) in the operation authority table 27 of FIG. Therefore, the operation button 30 is drawn in an inoperable state. In the operation disabled state, even if the mouse pointer is placed on the operation button 30, the shape of the mouse pointer remains an arrow and does not change. Also, the operation button 30 is drawn in a color indicating that the operation is disabled.
  • operation of the HMI screen (G10) in the second web browser (HMI1_2) is permitted (with operation authority). Therefore, the operation button 30 is drawn in an operable state. When the mouse pointer is placed on the operation button 30 in the operable state, the shape of the mouse pointer changes from an arrow to a finger. Also, the operation button 30 is drawn in a color indicating that it can be operated.
  • each web browser 6 processes the operation authority identification part (operation authority lamp 31 in FIG. 5) arranged on the HMI screen 7.
  • FIG. The web browser processing unit 11 determines whether or not the web browser 6 that draws the HMI screen 7 on which the operation right lamp 31 is arranged has the right to operate the HMI screen 7 (steps S160 and S170). . If there is an operation right, the parts type processing unit 14 draws the operation right lamp 31 in an operation permission color (green) (step S180). On the other hand, if there is no operation authority, the parts type processing unit 14 draws the operation authority lamp 31 in an operation prohibited color (red) (step S190). In the example shown in FIG.
  • step S160 If the condition of step S160 is not met, that is, parts that are neither operation parts nor operation right identification parts are drawn regardless of the operation right.
  • the screen transition button 32 is drawn as a button that can be operated regardless of the operation authority. Display parts (not shown) that only display the value of the PLC signal are drawn as inoperable parts regardless of the operation authority.
  • the drawing of the HMI screen 7 when the web browser 6 is activated has been described.
  • the screen transition button 32 may be pressed to transition to another HMI screen 7 .
  • the web browser processing unit 11 newly acquires the HTML file and SVG file 25 related to the other HMI screen 7 from the HMI server device 2, and executes the processes from step S120.
  • the operation authority for each HMI screen 7 is set for each web browser 6, and the same HMI screen 7 is displayed on the first web browser.
  • the second web browser can be implemented by one HMI client device 3 for operation.
  • one HMI client device 3 can run three or more web browsers 6, which can reduce cost, space, failure rate, and communication load.
  • the operation part and the operation authority identification part are drawn so that the operator can easily identify them according to the presence or absence of the operation authority, and erroneous operations can be reduced.
  • FIG. 6 is a block diagram showing a hardware configuration example of the HMI server device 2 and the HMI client device 3. As shown in FIG.
  • Each process of the HMI server device 2 described above is realized by a processing circuit.
  • the processing circuit is configured by connecting a processor 61 , a memory 62 and a network interface 63 .
  • the processor 61 implements each function of the HMI server device 2 by executing various programs stored in the memory 62 .
  • Memory 62 includes a main memory and an auxiliary memory.
  • the memory 62 stores in advance the HTML file, the SVG file 25, the parts library 26, and the operation authority table 27 described above.
  • the network interface 63 is communicatively connected to other devices within the same network via the computer network 4 .
  • the processing circuit is configured by connecting a processor 71, a memory 72, a network interface 73, an input interface 74, a first monitor 5a, and a second monitor 5b.
  • the processor 71 implements each function of the HMI client device 3 by executing various programs stored in the memory 72 .
  • Memory 72 includes a main memory and an auxiliary memory.
  • the network interface 73 is communicatively connected to other devices within the same network via the computer network 4 .
  • the input interface 74 is a set of input devices including a keyboard, mouse, touch panel, and the like.
  • programmable logic controller PLC
  • HMI server device 3
  • HMI client device 4
  • computer network 5 monitor 5a first monitor 5b second monitor 6 web browser 6a first web browser 6b second web browser 7
  • HMI screen 10 processing circuit 11 web browser processing unit 12 starting position processing unit 13
  • Screen operation authority processing unit 14
  • Parts type processing unit 20
  • PLC signal processing unit 21
  • Web server processing unit 25
  • SVG file 26
  • Operation authority table 30
  • Operation button 31
  • Operation authority lamp 32

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  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
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Abstract

This SCADA web HMI client device executes a plurality of web browsers communicating with a web server. A first web browser is displayed on a first monitor and renders an HMI screen for monitoring and controlling an industrial plant. A second web browser is displayed on a second monitor, and renders an HMI screen. An operation rights table is acquired from the web server. In the operation rights table, when operation of the HMI screen is not allowed for the first web browser, operation parts arranged in the HMI screen of the first web browser are rendered in an inoperable state. In the operation rights table, when operation of the HMI screen is allowed for the second web browser, operation parts arranged in the HMI screen of the second web browser are rendered in an operable state.

Description

ＳＣＡＤＡウェブＨＭＩクライアント装置およびＳＣＡＤＡウェブＨＭＩシステムSCADA Web HMI client device and SCADA Web HMI system
　本発明は、ＳＣＡＤＡウェブＨＭＩクライアント装置およびＳＣＡＤＡウェブＨＭＩシステムに関する。 The present invention relates to a SCADA Web HMI client device and a SCADA Web HMI system.
　ＳＣＡＤＡ（Ｓｕｐｅｒｖｉｓｏｒｙ Ｃｏｎｔｒｏｌ Ａｎｄ Ｄａｔａ Ａｃｑｕｉｓｉｔｉｏｎ）は、社会インフラシステムを監視制御する仕組みとして知られている。社会インフラシステムは、鉄鋼圧延システム、電力送変電システム、上下水道処理システム、ビル管理システム、道路システムなどである。 SCADA (Supervisory Control And Data Acquisition) is known as a mechanism for monitoring and controlling social infrastructure systems. Social infrastructure systems include steel rolling systems, power transmission and transformation systems, water and sewage treatment systems, building management systems, and road systems.
　ＳＣＡＤＡは、産業制御システムの一種であり、コンピュータによるシステム監視とプロセス制御とデータ収集とを行う。ＳＣＡＤＡでは、システムの処理性能に合わせた即応性（リアルタイム性）が必要である。 SCADA is a type of industrial control system that performs system monitoring, process control, and data collection by computer. SCADA requires responsiveness (real-time capability) matching the processing performance of the system.
　ＳＣＡＤＡは一般に次のようなサブシステムから構成される。
（１）ＨＭＩ（Ｈｕｍａｎ Ｍａｃｈｉｎｅ Ｉｎｔｅｒｆａｃｅ）
　ＨＭＩは、監視対象装置のデータをオペレータに提示し、オペレータが監視対象装置を監視し制御できるようにする機構である。
（２）監視制御システム
　監視制御システムは、Ｐｒｏｇｒａｍｍａｂｌｅ Ｌｏｇｉｃ Ｃｏｎｔｒｏｌｌｅｒ（ＰＬＣ）などによって構成される。監視制御システムは、監視対象装置のデータを収集し、監視対象装置に対して制御コマンドを送る。
（３）遠方入出力装置（Ｒｅｍｏｔｅ Ｉｎｐｕｔ Ｏｕｔｐｕｔ：ＲＩＯ）
　遠方入出力装置は、監視対象装置に設置されたセンサと接続し、センサの信号をデジタルのデータに変換し、そのデジタルデータを監視制御システムに送る。
（４）通信基盤
　通信基盤は、監視制御システムと遠方入出力装置を接続する。 SCADA generally consists of the following subsystems.
(1) HMI (Human Machine Interface)
An HMI is a mechanism that presents monitored device data to an operator and allows the operator to monitor and control the monitored device.
(2) Supervisory Control System The supervisory control system is composed of a Programmable Logic Controller (PLC) or the like. The supervisory control system collects data of monitored devices and sends control commands to the monitored devices.
(3) Remote Input Output (RIO)
The remote input/output device connects to a sensor installed in the monitoring target device, converts the signal of the sensor into digital data, and sends the digital data to the supervisory control system.
(4) Communication infrastructure The communication infrastructure connects the supervisory control system and remote input/output devices.
　ＳＣＡＤＡ ＨＭＩサブシステムの一例として、特許文献１には、ＨＭＩクライアント装置とＨＭＩサーバ装置とを備えるシステムが開示されている。特許文献１のような従来のＳＣＡＤＡでは、ＨＭＩサーバ装置が、ＰＬＣから受信したデータをＨＭＩクライアント装置へ送信する。ＨＭＩクライアント装置は、コンピュータ本体と、キーボード・マウス等の入力デバイスと、モニタとを有し、モニタに１つのＨＭＩ画面（HMI Screen）を表示する。 As an example of the SCADA HMI subsystem, Patent Document 1 discloses a system comprising an HMI client device and an HMI server device. In the conventional SCADA such as Patent Document 1, the HMI server device transmits the data received from the PLC to the HMI client device. The HMI client device has a computer main body, an input device such as a keyboard and a mouse, and a monitor, and displays one HMI screen on the monitor.
日本特開２０１７－２７２１１号公報Japanese Patent Application Laid-Open No. 2017-27211
　ところで、生産ライン等の運転室における運用形態として、多人数で監視するための大型モニタと、オペレータが操作するための卓上小型モニタとに、同じＨＭＩ画面をフルスクリーンで表示する形態がある。この運用形態を特許文献１に係るＨＭＩサブシステムで実現するには、大画面モニタに接続するＨＭＩクライアント装置と、卓上小型モニタに接続するＨＭＩクライアント装置とが必要であり、ＨＭＩクライアント装置を２台用意する必要がある。 By the way, as an operation form in the operator's cab of a production line, there is a form in which the same HMI screen is displayed in full screen on a large monitor for monitoring by a large number of people and a small desktop monitor for operator operation. In order to realize this operation mode with the HMI subsystem according to Patent Document 1, an HMI client device connected to a large screen monitor and an HMI client device connected to a small desktop monitor are required, and two HMI client devices are required. need to prepare.
　しかしながら、費用、設置スペース、故障率、通信負荷を低減する観点から、１台のＨＭＩクライアント装置で上記運用形態を実現できることが望ましい。 However, from the viewpoint of reducing cost, installation space, failure rate, and communication load, it is desirable to be able to realize the above operation mode with a single HMI client device.
　本願発明者は、鋭意研究を進めた結果、ブラウザベースのＳＣＡＤＡ ＨＭＩサブシステムを開発するに至った。これによれば、ウェブブラウザ上で動作するウェブアプリケーションとしてＨＭＩ画面を実現することができる。また、１台のＨＭＩクライアント装置に大型モニタと卓上小型モニタの２台を接続し、２つのウェブブラウザを実行してそれぞれのモニタに表示することができる。 As a result of intensive research, the inventor of the present application has developed a browser-based SCADA HMI subsystem. According to this, an HMI screen can be realized as a web application that operates on a web browser. Also, two monitors, a large monitor and a small desktop monitor, can be connected to one HMI client device, and two web browsers can be executed and displayed on each monitor.
　この構成において、１台のＨＭＩクライアント装置が備える入力デバイス（キーボード・マウス）は１セットであり、２つのウェブブラウザが同時に操作されることはない。一方で、それぞれのウェブブラウザを切り替えて操作することは可能であるため、誤操作を防ぐ必要がある。誤操作を防ぐため、多人数で監視するための大型モニタにはＨＭＩ画面が操作不可状態で表示され、オペレータが操作するための卓上小型モニタにはそのＨＭＩ画面が操作可能状態で表示される運用が望ましい場合がある。 In this configuration, one HMI client device has one set of input devices (keyboard and mouse), and two web browsers are not operated simultaneously. On the other hand, since it is possible to operate by switching each web browser, it is necessary to prevent erroneous operations. In order to prevent erroneous operation, the HMI screen is displayed in an inoperable state on a large monitor for monitoring by a large number of people, and the HMI screen is displayed in an operable state on a small desktop monitor for operator operation. may be desirable.
　本発明は、上述のような課題を解決するためになされたもので、ウェブブラウザ単位で各ＨＭＩ画面の操作権を設定して、同じＨＭＩ画面を、第１ウェブブラウザでは表示用として、第２ウェブブラウザでは操作用として、１台のコンピュータで実現できるＳＣＡＤＡウェブＨＭＩクライアント装置およびＳＣＡＤＡウェブＨＭＩシステムを提供することを目的とする。 SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and sets the operation authority of each HMI screen for each web browser so that the same HMI screen can be displayed in the first web browser and displayed in the second web browser. It is an object of the web browser to provide a SCADA web HMI client device and a SCADA web HMI system that can be implemented on a single computer for operation.
　第１の観点は、ＳＣＡＤＡウェブＨＭＩクライアント装置およびＳＣＡＤＡウェブＨＭＩシステムに関連する。
　ＳＣＡＤＡウェブＨＭＩシステムは、ＨＭＩサーバ装置とＨＭＩクライアント装置とを備える。
　ＨＭＩサーバ装置は、産業プラントを構成するフィールド機器群に関する信号をプログラマブルロジックコントローラと送受信し、かつウェブサーバを実行する。
　ＨＭＩクライアント装置は、前記ウェブサーバを介して前記信号を送受信する複数のウェブブラウザを実行する。
　前記ＨＭＩクライアント装置は、プロセッサと、第１モニタと、第２モニタと、を備える。
　前記プロセッサは、
　　前記第１モニタに表示され、前記産業プラントを監視制御するためのＨＭＩ画面を描画する、第１ウェブブラウザを実行し、
　　前記第２モニタに表示され、前記ＨＭＩ画面を描画する、第２ウェブブラウザを実行し、
　　前記ウェブサーバから、前記ウェブブラウザごとに前記ＨＭＩ画面の操作可否を定めた操作権テーブルを取得し、
　　前記操作権テーブルにおいて、前記第１ウェブブラウザに前記ＨＭＩ画面の操作が許可されていない場合、前記第１ウェブブラウザの前記ＨＭＩ画面に配置された操作パーツを操作不可状態で描画し、
　　前記操作権テーブルにおいて、前記第２ウェブブラウザに前記ＨＭＩ画面の操作が許可されている場合、前記第２ウェブブラウザの前記ＨＭＩ画面に配置された前記操作パーツを操作可能状態で描画する、ように構成される。 The first aspect relates to SCADA Web HMI client devices and SCADA Web HMI systems.
The SCADA web HMI system comprises an HMI server device and an HMI client device.
The HMI server device transmits and receives signals relating to the field devices that make up the industrial plant to and from the programmable logic controller, and runs a web server.
HMI client devices run multiple web browsers that send and receive the signals via the web server.
The HMI client device comprises a processor, a first monitor and a second monitor.
The processor
running a first web browser that renders an HMI screen displayed on the first monitor for monitoring and controlling the industrial plant;
running a second web browser displayed on the second monitor and rendering the HMI screen;
obtaining from the web server an operation authority table that determines whether or not the HMI screen can be operated for each web browser;
if the first web browser is not permitted to operate the HMI screen in the operation authority table, rendering the operation parts arranged on the HMI screen of the first web browser in an inoperable state;
In the operation authority table, when the second web browser is permitted to operate the HMI screen, the operation parts arranged on the HMI screen of the second web browser are rendered in an operable state. Configured.
　第２の観点は、第１の観点に加えて、次の特徴を更に有する。
　前記プロセッサは、
　　前記操作パーツが操作可能状態であり、かつ、前記操作パーツにマウスポインタが乗った場合に、前記マウスポインタの形状又は色を操作不可状態から操作可能状態へ変化させ、
　　前記操作パーツが操作不可状態である場合は、前記操作パーツに前記マウスポインタが乗っても前記マウスポインタの形状又は色を操作不可状態のまま変化させない、ように更に構成される。 The second aspect further has the following features in addition to the first aspect.
The processor
changing the shape or color of the mouse pointer from the inoperable state to the operable state when the operable part is in an operable state and the mouse pointer is placed on the operable part;
Further, when the operation part is in an inoperable state, the shape or color of the mouse pointer is not changed while the operation part is in an inoperable state even if the mouse pointer is placed on the operation part.
　第３の観点は、第１又は第２の観点に加えて、次の特徴を更に有する。
　前記プロセッサは、
　　前記ＨＭＩ画面の操作可否を示す操作権識別パーツを前記ＨＭＩ画面に表示し、
　　前記操作権テーブルにおいて、前記第１ウェブブラウザに前記ＨＭＩ画面の操作が許可されていない場合、前記第１ウェブブラウザの前記ＨＭＩ画面に配置された前記操作権識別パーツを操作禁止色で描画し、
　　前記操作権テーブルにおいて、前記第２ウェブブラウザに前記ＨＭＩ画面の操作が許可されている場合、前記第２ウェブブラウザの前記ＨＭＩ画面に配置された前記操作権識別パーツを操作許可色で描画する、ように更に構成される。 The third aspect further has the following features in addition to the first or second aspect.
The processor
displaying on the HMI screen an operation right identification part indicating whether or not the HMI screen can be operated;
drawing the operation authority identification part arranged on the HMI screen of the first web browser in an operation prohibited color when the first web browser is not permitted to operate the HMI screen in the operation authority table;
When the second web browser is permitted to operate the HMI screen in the operation authority table, the operation authority identification part arranged on the HMI screen of the second web browser is drawn in an operation permission color. is further configured as
　第４の観点は、第１乃至第３の観点のいずれかに加えて、次の特徴を更に有する。
　前記プロセッサは、
　　前記第１ウェブブラウザを終了した後に再び開始する場合、前記第１ウェブブラウザの終了時の位置およびサイズに依らず、前記第１ウェブブラウザを予め定めた初期位置および初期サイズで前記第１モニタに表示し、
　　前記第２ウェブブラウザを終了した後に再び開始する場合、前記第２ウェブブラウザの終了時の位置およびサイズに依らず、前記第２ウェブブラウザを予め定めた初期位置および初期サイズで前記第２モニタに表示する、ように更に構成される。 The fourth aspect further has the following features in addition to any one of the first to third aspects.
The processor
When restarting the first web browser after terminating it, the first web browser is displayed on the first monitor at a predetermined initial position and initial size regardless of the position and size when the first web browser is terminated. display and
When restarting the second web browser after terminating the second web browser, the second web browser is displayed on the second monitor at a predetermined initial position and initial size regardless of the position and size of the second web browser when the second web browser is terminated. further configured to display.
　第１の観点によれば、ウェブブラウザ単位で各ＨＭＩ画面の操作権を設定して、同じＨＭＩ画面を、第１ウェブブラウザでは表示用として、第２ウェブブラウザでは操作用として、１台のＨＭＩクライアント装置で実現できる。 According to the first aspect, the operation authority of each HMI screen is set for each web browser, and the same HMI screen is used for display in the first web browser and for operation in the second web browser. It can be implemented in the client device.
　第２の観点によれば、操作パーツに乗ったときのマウスポインタが、操作権の有無に応じて異なる表現で描画される。そのため、オペレータは現在操作しているウェブブラウザの操作権の有無を識別しやすくなる。 According to the second point of view, the mouse pointer when placed on the operation part is drawn with different representations depending on whether or not the user has the operation right. Therefore, it becomes easier for the operator to identify whether or not he/she has the right to operate the web browser that he or she is currently operating.
　第３の観点によれば、ＨＭＩ画面の操作可否を示す操作権識別パーツの色が、ウェブブラウザの操作権の有無に応じて変更される。そのため、オペレータはウェブブラウザの操作権の有無を識別しやすくなる。 According to the third aspect, the color of the operation authority identification part indicating whether or not the HMI screen can be operated is changed according to the presence or absence of the operation authority of the web browser. Therefore, it becomes easier for the operator to identify whether or not he/she has the right to operate the web browser.
　第４の観点によれば、ウェブブラウザの終了時の位置およびサイズに依らず、ウェブブラウザを予め定めた初期位置および初期サイズで既定のモニタに表示することができる。そのため、何らかの原因でウェブブラウザに運用外の操作がなされた場合であっても、ウェブブラウザを容易に運用状態に復旧できる。 According to the fourth aspect, the web browser can be displayed on the default monitor in a predetermined initial position and initial size regardless of the position and size when the web browser is terminated. Therefore, even if the web browser is operated for some reason, the web browser can be easily restored to the operating state.
本発明の実施の形態に係るＳＣＡＤＡウェブＨＭＩシステムの構成例を説明するための図である。1 is a diagram for explaining a configuration example of a SCADA web HMI system according to an embodiment of the present invention; FIG. 本発明の実施の形態に係るＨＭＩサーバ装置およびＨＭＩクライアント装置が有する機能の概要を例示するブロック図である。3 is a block diagram illustrating an outline of functions of an HMI server device and an HMI client device according to the embodiment of the present invention; FIG. 本発明の実施の形態１に係る操作権テーブルの一例を示す図である。It is a figure which shows an example of the operation authority table which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係るＨＭＩクライアント装置３の処理例について説明するためのフローチャートである。4 is a flowchart for explaining a processing example of the HMI client device 3 according to Embodiment 1 of the present invention; 第１ウェブブラウザに描画された操作不可状態のＨＭＩ画面の例、および第２ウェブブラウザに描画された操作可能状態のＨＭＩ画面の例を示す図である。FIG. 10 is a diagram showing an example of an HMI screen in an inoperable state rendered on a first web browser and an example of an HMI screen in an operable state rendered in a second web browser; ＨＭＩサーバ装置およびＨＭＩクライアント装置のハードウェア構成例を示すブロック図である。3 is a block diagram showing an example hardware configuration of an HMI server device and an HMI client device; FIG.
　以下、図面を参照して本発明の実施の形態について詳細に説明する。尚、各図において共通する要素には、同一の符号を付して重複する説明を省略する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Elements that are common in each drawing are denoted by the same reference numerals, and overlapping descriptions are omitted.
実施の形態．
１．ＳＣＡＤＡウェブＨＭＩシステム
　図１は、実施の形態に係るＳＣＡＤＡウェブＨＭＩシステムの構成例を説明するための図である。図１に示すＳＣＡＤＡウェブＨＭＩシステムは、コンピュータネットワーク４を介して相互に接続された、ＰＬＣ１、ＨＭＩサーバ装置２、ＨＭＩクライアント装置３を備える。コンピュータネットワーク４は例えばイーサネット（登録商標）である。 Embodiment.
1. SCADA Web HMI System FIG. 1 is a diagram for explaining a configuration example of a SCADA Web HMI system according to an embodiment. The SCADA web HMI system shown in FIG. 1 comprises a PLC 1, an HMI server device 2, and an HMI client device 3 interconnected via a computer network 4. FIG. The computer network 4 is, for example, Ethernet (registered trademark).
　ＰＬＣ１は、図示省略する制御ネットワークを介して監視対象装置（産業プラントを構成するフィールド機器群（アクチュエータおよびセンサを含む））に接続する。ＰＬＣ１は、ブロックデータを含むパケットをマルチキャストまたはブロードキャストでコンピュータネットワーク４へ周期的に送信する。ブロックデータは、ＰＬＣ信号の集合である。１つのブロックデータには数十から数百のＰＬＣ信号が含まれる。ＰＬＣ信号の種類として、入出力信号（アクチュエータ制御信号およびセンサ検出信号を含む）やアラーム信号がある。また、ＰＬＣ１は、ＨＭＩサーバ装置２から監視対象装置に関する制御信号を受信する。 The PLC 1 connects to monitored devices (field device groups (including actuators and sensors) that make up an industrial plant) via a control network (not shown). PLC 1 periodically transmits packets containing block data to computer network 4 by multicast or broadcast. Block data is a set of PLC signals. One block data includes tens to hundreds of PLC signals. Types of PLC signals include input/output signals (including actuator control signals and sensor detection signals) and alarm signals. The PLC 1 also receives control signals relating to the monitored device from the HMI server device 2 .
　図２を参照して、ＨＭＩサーバ装置２およびＨＭＩクライアント装置３について説明する。図２は、ＨＭＩサーバ装置２およびＨＭＩクライアント装置３が有する機能の概要を例示するブロック図である。 The HMI server device 2 and the HMI client device 3 will be described with reference to FIG. FIG. 2 is a block diagram illustrating an overview of functions possessed by the HMI server device 2 and the HMI client device 3. As shown in FIG.
　ＨＭＩサーバ装置２は、産業プラントを構成するフィールド機器群に関する信号をプログラマブルロジックコントローラと送受信し、かつウェブサーバを実行する。ＨＭＩサーバ装置２は、後述する図６に示すように、各種処理を実行するプロセッサ６１、各種情報が格納されるメモリ６２を備える。メモリ６２に記憶されたプログラムをプロセッサ６１が実行することにより、プロセッサ６１は、ＰＬＣ信号処理部２０、ウェブサーバ処理部２１として機能する。ＰＬＣ信号処理部２０およびウェブサーバ処理部２１はプロセス間通信により相互にデータを送受信可能である。 The HMI server device 2 transmits and receives signals related to field devices that make up the industrial plant to and from the programmable logic controller, and runs a web server. The HMI server device 2 includes a processor 61 that executes various processes and a memory 62 that stores various information, as shown in FIG. 6, which will be described later. The processor 61 executes the programs stored in the memory 62 so that the processor 61 functions as the PLC signal processing section 20 and the web server processing section 21 . The PLC signal processing unit 20 and the web server processing unit 21 can mutually transmit and receive data through inter-process communication.
　ＰＬＣ信号処理部２０は、周期的にＰＬＣ１から受信したＰＬＣ信号を、ウェブサーバ処理部２１を介して各ウェブブラウザ６（ウェブブラウザ処理部１１）へ送信する。また、ＰＬＣ信号処理部２０は、ウェブサーバ処理部２１を介して各ウェブブラウザ６から受信した制御信号をＰＬＣ１へ送信する。 The PLC signal processing unit 20 periodically transmits the PLC signal received from the PLC 1 to each web browser 6 (web browser processing unit 11) via the web server processing unit 21. Also, the PLC signal processing unit 20 transmits control signals received from each web browser 6 via the web server processing unit 21 to the PLC 1 .
　ウェブサーバ処理部２１は、ＨＭＩクライアント装置３の各ウェブブラウザ６（ウェブブラウザ処理部１１）と、ＨＴＴＰ（Hypertext Transfer Protocol）、ＨＴＴＰＳ（Hypertext Transfer Protocol Secure）、WebSocketを用いて通信可能である。ウェブサーバ処理部２１は、各ウェブブラウザ６（ウェブブラウザ処理部１１）からのリクエストに応じてコンテンツを送信する。コンテンツは、ＨＴＭＬファイル（図示省略）、ＨＭＩ画面（HMI Screen）毎のＳＶＧ（Scalable Vector Graphics）ファイル２５、パーツ種別毎の動作を記述したパーツライブラリ２６、操作権テーブル２７を含む。 The web server processing unit 21 can communicate with each web browser 6 (web browser processing unit 11) of the HMI client device 3 using HTTP (Hypertext Transfer Protocol), HTTPS (Hypertext Transfer Protocol Secure), and WebSocket. The web server processing unit 21 transmits content in response to requests from each web browser 6 (web browser processing unit 11). The contents include an HTML file (not shown), an SVG (Scalable Vector Graphics) file 25 for each HMI screen, a parts library 26 describing operations for each part type, and an operation authority table 27.
　パーツライブラリ２６は、パーツ種別毎に動作を記述したスクリプトの集合を含む。スクリプトは、パーツ種別毎に定義されたJavaScript（登録商標）プログラムである。スクリプトは、必要に応じてパラメータ値（例えば操作権テーブル２７に定義された操作権の有無）が与えられて各ウェブブラウザ６上で実行可能である。 The parts library 26 contains a set of scripts describing actions for each part type. A script is a JavaScript (registered trademark) program defined for each part type. The script can be executed on each web browser 6 given a parameter value (for example, presence/absence of operation authority defined in the operation authority table 27) as necessary.
　操作権テーブル２７は、各ウェブブラウザ６に、各ＨＭＩ画面７の操作権があるか（操作が許可されているか）操作権がないか（操作が許可されていないか）を定めたテーブルである。図３は、本実施形態に係る操作権テーブル２７の一例を示す図である。「Ｇ１０」～「Ｇ１４」は各ＨＭＩ画面７のスクリーン名、「ＨＭＩ１＿１」は第１ウェブブラウザ６ａのブラウザ名、「ＨＭＩ１＿２」は第２ウェブブラウザ６ｂのブラウザ名である。一例として、ブラウザ名はコンピュータのデバイス名とモニタ番号とを組み合わせた名称である。図３に示す例では、第１ウェブブラウザ６ａ（ＨＭＩ１＿１）は、ＨＭＩ画面（Ｇ１０）の操作権を有しない。一方で、第２ウェブブラウザ６ｂ（ＨＭＩ１＿２）は、ＨＭＩ画面（Ｇ１０）の操作権を有する。 The operation right table 27 is a table that defines whether each web browser 6 has the right to operate each HMI screen 7 (whether the operation is permitted) or not (whether the operation is permitted). . FIG. 3 is a diagram showing an example of the operation authority table 27 according to this embodiment. "G10" to "G14" are the screen names of the respective HMI screens 7, "HMI1_1" is the browser name of the first web browser 6a, and "HMI1_2" is the browser name of the second web browser 6b. As an example, the browser name is a combination of the device name of the computer and the monitor number. In the example shown in FIG. 3, the first web browser 6a (HMI1_1) does not have the right to operate the HMI screen (G10). On the other hand, the second web browser 6b (HMI1_2) has the right to operate the HMI screen (G10).
２．ＳＣＡＤＡウェブＨＭＩクライアント装置の構成
　図２に戻り説明を続ける。ＨＭＩクライアント装置３は、処理回路１０（後述する図６に示す、各種処理を実行するプロセッサ７１、各種情報が格納されるメモリ７２を含む）、複数のモニタ５（第１モニタ５ａ、第２モニタ５ｂ）を備える。メモリ７２に記憶されたプログラムをプロセッサ７１が実行することにより、プロセッサ７１は、ウェブブラウザ処理部１１として機能する。 2. Configuration of SCADA Web HMI Client Device Returning to FIG. 2, the description continues. The HMI client device 3 includes a processing circuit 10 (including a processor 71 for executing various processes and a memory 72 for storing various information shown in FIG. 6, which will be described later), a plurality of monitors 5 (a first monitor 5a, a second monitor 5b). The processor 71 functions as the web browser processing unit 11 by executing the program stored in the memory 72 .
　ウェブブラウザ処理部１１は、ウェブブラウザ６ごとに実行される。ウェブブラウザ６は、産業プラントを監視制御するためのＨＭＩ画面７を描画する。ＨＭＩ画面７はオペレータの操作により他のＨＭＩ画面７へ切り替わる。ＨＭＩ画面７には複数のパーツが配置されている。パーツは、例えば、オペレータの操作に応じてＰＬＣ１へ制御信号を送信するための操作パーツ、受信したＰＬＣ信号に応じて表示状態（数値、文字、色、形）が変化する表示パーツ、他のＨＭＩ画面に切り替える画面遷移パーツ、操作権の有無に応じて色が変化する操作権ランプなどの操作権識別パーツ、などを含む。 The web browser processing unit 11 is executed for each web browser 6. The web browser 6 renders an HMI screen 7 for monitoring and controlling the industrial plant. The HMI screen 7 is switched to another HMI screen 7 by operator's operation. A plurality of parts are arranged on the HMI screen 7 . The parts include, for example, operation parts for transmitting control signals to the PLC 1 according to operator's operations, display parts whose display state (numerical value, character, color, shape) changes according to the received PLC signal, and other HMI It includes a screen transition part for switching to a screen, an operation right identification part such as an operation right lamp whose color changes according to the presence or absence of the operation right, and the like.
　各ウェブブラウザ６（ウェブブラウザ処理部１１）は起動時に、ウェブサーバ処理部２１から、上述したＨＴＭＬファイル、ＳＶＧファイル２５、パーツライブラリ２６、操作権テーブル２７などを取得する。これらに基づいて、ウェブブラウザ６は、パーツが配置されたＨＭＩ画面７を描画する。また、各ウェブブラウザ６は、起動時にウェブサーバ処理部２１から常に最新のファイルを取得するために、キャッシュを使用しないモードで実行される。 Each web browser 6 (web browser processing unit 11) acquires the above-mentioned HTML file, SVG file 25, parts library 26, operation authority table 27, etc. from the web server processing unit 21 when it is started. Based on these, the web browser 6 draws the HMI screen 7 on which the parts are arranged. Also, each web browser 6 is executed in a mode that does not use a cache in order to always obtain the latest files from the web server processing unit 21 when activated.
　ウェブブラウザ処理部１１は、起動位置処理部１２、画面操作権処理部１３、パーツ種別処理部１４を備える。 The web browser processing unit 11 includes a starting position processing unit 12, a screen operation authority processing unit 13, and a parts type processing unit 14.
　起動位置処理部１２は、ウェブブラウザ６の終了時の位置およびサイズに依らず、ウェブブラウザ６を予め定めた初期位置および初期サイズで既定のモニタ５に表示する。例えば、第１ウェブブラウザ６ａを終了した後に再び開始する場合、第１ウェブブラウザ６ａは第１モニタ５ａにフルスクリーンで表示される。同様に第２ウェブブラウザ６ｂを終了した後に再び開始する場合、第２ウェブブラウザ６ｂは第２モニタ５ｂにフルスクリーンで表示される。これによれば、何らかの原因でウェブブラウザに運用外の操作がなされた場合であっても、ウェブブラウザ６を容易に運用状態に復旧できる。 The starting position processing unit 12 displays the web browser 6 at a predetermined initial position and initial size on the default monitor 5 regardless of the position and size of the web browser 6 when it is terminated. For example, if the first web browser 6a is terminated and then restarted, the first web browser 6a is displayed in full screen on the first monitor 5a. Similarly, when restarting the second web browser 6b after terminating it, the second web browser 6b is displayed in full screen on the second monitor 5b. According to this, even if the web browser is operated out of operation for some reason, the web browser 6 can be easily restored to the operating state.
　画面操作権処理部１３は、ＨＭＩサーバ装置２から取得した操作権テーブル２７を読み込んで、ウェブブラウザ６ごとに各ＨＭＩ画面７の操作権の有無を決定する。 The screen operation authority processing unit 13 reads the operation authority table 27 acquired from the HMI server device 2 and determines whether or not each web browser 6 has the operation authority for each HMI screen 7 .
　パーツ種別処理部１４は、ＨＭＩ画面７に配置されたパーツのパーツ種別に応じて、上述したパーツライブラリ２６に含まれるパーツ種別毎のスクリプトを実行する。ここでは、パーツ種別のうち、スクリプトに渡される操作権の有無（パラメータ値）に応じて動作が変化する操作パーツおよび操作権識別パーツについて説明する。 The parts type processing unit 14 executes a script for each part type contained in the parts library 26 described above, according to the parts type of the parts arranged on the HMI screen 7 . Of the parts types, operation parts and operation authority identification parts whose actions change depending on the presence or absence of the operation authority (parameter value) passed to the script will be described here.
　操作パーツについて、操作権テーブル２７においてウェブブラウザ６にＨＭＩ画面７の操作が許可されていない場合、ウェブブラウザ６のＨＭＩ画面７に配置された操作パーツは操作不可状態で描画される。また、操作権テーブル２７においてウェブブラウザ６にＨＭＩ画面７の操作が許可されている場合、ウェブブラウザ６のＨＭＩ画面７に配置された操作パーツは操作可能状態で描画される。 Regarding operation parts, if the web browser 6 is not permitted to operate the HMI screen 7 in the operation authority table 27, the operation parts arranged on the HMI screen 7 of the web browser 6 are rendered in an inoperable state. Further, when the web browser 6 is permitted to operate the HMI screen 7 in the operation authority table 27, the operation parts arranged on the HMI screen 7 of the web browser 6 are drawn in an operable state.
　操作可能状態において、操作パーツは、オペレータの実行操作（例えばマウスクリック）を受け付け、当該操作に応じた制御信号をＨＭＩサーバ装置２へ送信する。操作不可状態において、操作パーツは、オペレータの実行操作を受け付けない。 In the operable state, the operation part accepts the operator's execution operation (for example, mouse click) and transmits a control signal corresponding to the operation to the HMI server device 2. In the operation-disabled state, the operation part does not accept the operator's execution operation.
　また、操作可能状態と操作不可状態とではマウスオーバー処理が異なる。操作可能状態において、操作パーツにマウスポインタが乗った場合、マウスポインタの形状又は色は、操作不可状態から操作可能状態へ変化する。操作不可状態においては、操作パーツにマウスポインタが乗ってもマウスポインタの形状又は色は操作不可状態のまま変化しない。これによれば、操作パーツに乗ったときのマウスポインタが、操作権の有無に応じて異なる表現で描画される。そのため、オペレータは現在操作しているウェブブラウザ６の操作権の有無を識別しやすい。 Also, mouseover processing differs between the operable state and the non-operable state. In the operable state, when the mouse pointer is placed on the operable part, the shape or color of the mouse pointer changes from the inoperable state to the operable state. In the inoperable state, the shape or color of the mouse pointer remains in the inoperable state even if the mouse pointer is placed on the operation part. According to this, the mouse pointer when placed on the operating part is drawn with different representations depending on whether or not the user has the right to operate. Therefore, the operator can easily identify whether or not he/she has the right to operate the web browser 6 that he or she is currently operating.
　操作権識別パーツ（操作権ランプ）について、操作権テーブル２７においてウェブブラウザ６にＨＭＩ画面７の操作が許可されていない場合、ウェブブラウザ６のＨＭＩ画面７に配置された操作権識別パーツは操作禁止色で描画される。操作禁止色は例えば赤である。また、操作権テーブル２７においてウェブブラウザ６にＨＭＩ画面７の操作が許可されている場合、ウェブブラウザ６のＨＭＩ画面７に配置された操作権識別パーツは操作許可色で描画される。操作許可色は例えば緑である。これによれば、ＨＭＩ画面７の操作可否を示す操作権識別パーツの色が、ウェブブラウザ６の操作権の有無に応じて変更される。そのため、オペレータはウェブブラウザ６の操作権の有無を識別しやすい。 Regarding the operation authority identification parts (operation authority lamps), if the operation authority table 27 does not allow the web browser 6 to operate the HMI screen 7, the operation authority identification parts arranged on the HMI screen 7 of the web browser 6 are prohibited from being operated. drawn in color. The operation prohibited color is red, for example. Further, when the web browser 6 is permitted to operate the HMI screen 7 in the operation authority table 27, the operation authority identification parts arranged on the HMI screen 7 of the web browser 6 are drawn in an operation permitted color. The operation permission color is green, for example. According to this, the color of the operation authority identification part indicating whether or not the operation of the HMI screen 7 is permitted is changed according to the presence or absence of the operation authority of the web browser 6 . Therefore, the operator can easily identify whether or not he/she has the right to operate the web browser 6 .
３．ＳＣＡＤＡウェブＨＭＩクライアント装置の動作例
　図３～図５を参照して、操作権の有無に応じた各ウェブブラウザ６におけるＨＭＩ画面７の表示について具体的に説明する。図３は、上述した操作権テーブル２７の一例を示す図である。図４は、ＨＭＩクライアント装置３の処理例について説明するためのフローチャートである。図５は、第１ウェブブラウザ６ａに描画された操作不可状態のＨＭＩ画面７の例、および第２ウェブブラウザ６ｂに描画された操作可能状態のＨＭＩ画面７の例を示す図である。 3. Operation Example of SCADA Web HMI Client Apparatus Display of the HMI screen 7 in each web browser 6 according to the presence or absence of the operation right will be specifically described with reference to FIGS. 3 to 5. FIG. FIG. 3 is a diagram showing an example of the operation authority table 27 described above. FIG. 4 is a flowchart for explaining a processing example of the HMI client device 3. FIG. FIG. 5 shows an example of an HMI screen 7 in an inoperable state drawn on the first web browser 6a and an example of an HMI screen 7 in an operable state drawn on the second web browser 6b.
　図４のステップＳ１００において、ＨＭＩクライアント装置３は、ウェブブラウザ６を実行する。ウェブブラウザ処理部１１は、ウェブブラウザ６の終了時の位置およびサイズに依らず、ウェブブラウザ６を予め定めた初期位置および初期サイズで既定のモニタ５に表示する。
　図５に示す例では、第１ウェブブラウザ６ａは第１モニタ５ａにフルスクリーンで表示され、第２ウェブブラウザ６ｂは第２モニタ５ｂにフルスクリーンで表示される。 In step S100 of FIG. 4, the HMI client device 3 executes the web browser 6. FIG. The web browser processing unit 11 displays the web browser 6 on the default monitor 5 at a predetermined initial position and initial size regardless of the position and size when the web browser 6 is terminated.
In the example shown in FIG. 5, the first web browser 6a is displayed in full screen on the first monitor 5a, and the second web browser 6b is displayed in full screen on the second monitor 5b.
　ステップＳ１１０において、各ウェブブラウザ６は、ＨＭＩサーバ装置２からコンテンツを取得する。コンテンツには、上述したＨＴＭＬファイル、ＳＶＧファイル２５、パーツライブラリ２６、操作権テーブル２７が含まれる。なお、パーツライブラリ２６および操作権テーブル２７はウェブブラウザ６の起動時にのみ取得すれば足りる。
　図５に示す例は、第１ウェブブラウザ６ａおよび第２ウェブブラウザ６ｂに同一のＨＭＩ画面（Ｇ１０）を表示するものであり、各ウェブブラウザ６は、同一のコンテンツを取得する。 At step S<b>110 , each web browser 6 acquires content from the HMI server device 2 . The content includes the HTML file, SVG file 25, parts library 26, and operation authority table 27 described above. It is sufficient to obtain the parts library 26 and the operation authority table 27 only when the web browser 6 is activated.
The example shown in FIG. 5 displays the same HMI screen (G10) on the first web browser 6a and the second web browser 6b, and each web browser 6 acquires the same content.
　ステップＳ１２０～ステップＳ１５０において、各ウェブブラウザ６は、ＨＭＩ画面７に配置されている操作パーツ（図５の操作ボタン３０）について処理する。ウェブブラウザ処理部１１は、操作パーツが配置されたＨＭＩ画面７を描画しているウェブブラウザ６に、当該ＨＭＩ画面７の操作権があるか否かを判定する（ステップＳ１２０、ステップＳ１３０）。操作権がある場合、パーツ種別処理部１４は、操作パーツを操作可能状態で描画する（ステップＳ１４０）。一方、操作権がない場合は、パーツ種別処理部１４は、操作パーツを操作不可状態で描画する（ステップＳ１５０）。
　図５に示す例では、図３の操作権テーブル２７には、第１ウェブブラウザ（ＨＭＩ１＿１）におけるＨＭＩ画面（Ｇ１０）の操作は許可されていない（操作権なし）。そのため、操作ボタン３０は操作不可状態で描画される。操作不可状態においては、操作ボタン３０にマウスポインタが乗ってもマウスポインタの形状は矢印のまま変化しない。また、操作ボタン３０は操作無効を示す色で描画される。
　一方、図３の操作権テーブル２７には、第２ウェブブラウザ（ＨＭＩ１＿２）におけるＨＭＩ画面（Ｇ１０）の操作は許可されている（操作権あり）。そのため、操作ボタン３０は操作可能状態で描画される。操作可能状態において操作ボタン３０にマウスポインタが乗った場合、マウスポインタの形状は矢印から指形に変化する。また、操作ボタン３０は操作可能を示す色で描画される。 In steps S120 to S150, each web browser 6 processes the operation parts (operation buttons 30 in FIG. 5) arranged on the HMI screen 7. FIG. The web browser processing unit 11 determines whether or not the web browser 6 that draws the HMI screen 7 on which the operation parts are arranged has the right to operate the HMI screen 7 (steps S120 and S130). When there is the operation right, the parts type processing unit 14 draws the operation parts in an operable state (step S140). On the other hand, if there is no operation authority, the parts type processing unit 14 draws the operation parts in an operation-disabled state (step S150).
In the example shown in FIG. 5, operation of the HMI screen (G10) in the first web browser (HMI1_1) is not permitted (no operation authority) in the operation authority table 27 of FIG. Therefore, the operation button 30 is drawn in an inoperable state. In the operation disabled state, even if the mouse pointer is placed on the operation button 30, the shape of the mouse pointer remains an arrow and does not change. Also, the operation button 30 is drawn in a color indicating that the operation is disabled.
On the other hand, in the operation authority table 27 of FIG. 3, operation of the HMI screen (G10) in the second web browser (HMI1_2) is permitted (with operation authority). Therefore, the operation button 30 is drawn in an operable state. When the mouse pointer is placed on the operation button 30 in the operable state, the shape of the mouse pointer changes from an arrow to a finger. Also, the operation button 30 is drawn in a color indicating that it can be operated.
　ステップＳ１６０～ステップＳ１９０において、各ウェブブラウザ６は、ＨＭＩ画面７に配置されている操作権識別パーツ（図５の操作権ランプ３１）について処理する。ウェブブラウザ処理部１１は、操作権ランプ３１が配置されたＨＭＩ画面７を描画しているウェブブラウザ６に、当該ＨＭＩ画面７の操作権があるか否かを判定する（ステップＳ１６０、ステップＳ１７０）。操作権がある場合、パーツ種別処理部１４は、操作権ランプ３１を操作許可色（緑色）で描画する（ステップＳ１８０）。一方、操作権がない場合は、パーツ種別処理部１４は、操作権ランプ３１を操作禁止色（赤色）で描画する（ステップＳ１９０）。
　図５に示す例では、第１ウェブブラウザ６ａにはＨＭＩ画面（Ｇ１０）の操作権がないため操作権ランプ３１は赤色で描画される。第２ウェブブラウザ６ｂにはＨＭＩ画面（Ｇ１０）の操作権があるため操作権ランプ３１は緑色で描画される。 In steps S160 to S190, each web browser 6 processes the operation authority identification part (operation authority lamp 31 in FIG. 5) arranged on the HMI screen 7. FIG. The web browser processing unit 11 determines whether or not the web browser 6 that draws the HMI screen 7 on which the operation right lamp 31 is arranged has the right to operate the HMI screen 7 (steps S160 and S170). . If there is an operation right, the parts type processing unit 14 draws the operation right lamp 31 in an operation permission color (green) (step S180). On the other hand, if there is no operation authority, the parts type processing unit 14 draws the operation authority lamp 31 in an operation prohibited color (red) (step S190).
In the example shown in FIG. 5, since the first web browser 6a does not have the right to operate the HMI screen (G10), the operating right lamp 31 is drawn in red. Since the second web browser 6b has the right to operate the HMI screen (G10), the right to operate lamp 31 is drawn in green.
　なお、ステップＳ１６０の条件が成立しない場合、すなわち操作パーツでも操作権識別パーツでもないパーツは、操作権による違いなく描画される。
　図５に示す例では、画面遷移ボタン３２は、操作権に関わらず操作可能なボタンとして描画される。また、ＰＬＣ信号の値を表示するのみの表示パーツ（図示省略）は操作権に関わらず操作不能なパーツとして描画される。 If the condition of step S160 is not met, that is, parts that are neither operation parts nor operation right identification parts are drawn regardless of the operation right.
In the example shown in FIG. 5, the screen transition button 32 is drawn as a button that can be operated regardless of the operation authority. Display parts (not shown) that only display the value of the PLC signal are drawn as inoperable parts regardless of the operation authority.
　ところで、上述した具体例では、ウェブブラウザ６の起動時のＨＭＩ画面７の描画について説明した。しかしながら、画面遷移ボタン３２を押して他のＨＭＩ画面７に遷移する場合もある。この場合、ウェブブラウザ処理部１１は、ＨＭＩサーバ装置２から当該他のＨＭＩ画面７に関するＨＴＭＬファイル、ＳＶＧファイル２５を新たに取得し、ステップＳ１２０以降の処理を実行する。 By the way, in the above-described specific example, the drawing of the HMI screen 7 when the web browser 6 is activated has been described. However, the screen transition button 32 may be pressed to transition to another HMI screen 7 . In this case, the web browser processing unit 11 newly acquires the HTML file and SVG file 25 related to the other HMI screen 7 from the HMI server device 2, and executes the processes from step S120.
４．効果
　以上説明したように、本実施形態に係るＳＣＡＤＡウェブＨＭＩシステムによれば、ウェブブラウザ６単位で各ＨＭＩ画面７の操作権を設定して、同じＨＭＩ画面７を、第１ウェブブラウザでは表示用として、第２ウェブブラウザでは操作用として、１台のＨＭＩクライアント装置３で実現できる。また、１台のＨＭＩクライアント装置３で、３つ以上のウェブブラウザ６を実行することもでき、コスト、スペース、故障率、通信負荷を低減できる。また、操作パーツおよび操作権識別パーツは、操作権の有無に応じてオペレータにとって識別しやすく描画され、誤操作を低減できる。 4. Effect As described above, according to the SCADA web HMI system according to the present embodiment, the operation authority for each HMI screen 7 is set for each web browser 6, and the same HMI screen 7 is displayed on the first web browser. As such, the second web browser can be implemented by one HMI client device 3 for operation. Also, one HMI client device 3 can run three or more web browsers 6, which can reduce cost, space, failure rate, and communication load. In addition, the operation part and the operation authority identification part are drawn so that the operator can easily identify them according to the presence or absence of the operation authority, and erroneous operations can be reduced.
５．ハードウェア構成例
　図６は、ＨＭＩサーバ装置２およびＨＭＩクライアント装置３のハードウェア構成例を示すブロック図である。 5. Hardware Configuration Example FIG. 6 is a block diagram showing a hardware configuration example of the HMI server device 2 and the HMI client device 3. As shown in FIG.
　上述したＨＭＩサーバ装置２の各処理は、処理回路により実現される。処理回路は、プロセッサ６１と、メモリ６２と、ネットワークインタフェース６３とが接続して構成されている。プロセッサ６１は、メモリ６２に記憶された各種プログラムを実行することにより、ＨＭＩサーバ装置２の各機能を実現する。メモリ６２は、主記憶装置および補助記憶装置を含む。メモリ６２は、上述したＨＴＭＬファイル、ＳＶＧファイル２５、パーツライブラリ２６、操作権テーブル２７を予め記憶している。ネットワークインタフェース６３は、コンピュータネットワーク４を介して同一ネットワーク内の他の装置と通信可能に接続する。 Each process of the HMI server device 2 described above is realized by a processing circuit. The processing circuit is configured by connecting a processor 61 , a memory 62 and a network interface 63 . The processor 61 implements each function of the HMI server device 2 by executing various programs stored in the memory 62 . Memory 62 includes a main memory and an auxiliary memory. The memory 62 stores in advance the HTML file, the SVG file 25, the parts library 26, and the operation authority table 27 described above. The network interface 63 is communicatively connected to other devices within the same network via the computer network 4 .
　上述したＨＭＩクライアント装置３の各処理は、処理回路により実現される。処理回路は、プロセッサ７１と、メモリ７２と、ネットワークインタフェース７３と、入力インタフェース７４と、第１モニタ５ａと、第２モニタ５ｂとが接続して構成されている。プロセッサ７１は、メモリ７２に記憶された各種プログラムを実行することにより、ＨＭＩクライアント装置３の各機能を実現する。メモリ７２は、主記憶装置および補助記憶装置を含む。ネットワークインタフェース７３は、コンピュータネットワーク４を介して同一ネットワーク内の他の装置と通信可能に接続する。入力インタフェース７４は、キーボード、マウス、タッチパネル等からなる一組の入力デバイスである。 Each process of the HMI client device 3 described above is realized by a processing circuit. The processing circuit is configured by connecting a processor 71, a memory 72, a network interface 73, an input interface 74, a first monitor 5a, and a second monitor 5b. The processor 71 implements each function of the HMI client device 3 by executing various programs stored in the memory 72 . Memory 72 includes a main memory and an auxiliary memory. The network interface 73 is communicatively connected to other devices within the same network via the computer network 4 . The input interface 74 is a set of input devices including a keyboard, mouse, touch panel, and the like.
　以上、本発明の実施の形態について説明したが、本発明は、上記の実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々変形して実施することができる。上述した実施の形態において各要素の個数、数量、量、範囲等の数に言及した場合、特に明示した場合や原理的に明らかにその数に特定される場合を除いて、その言及した数にこの発明が限定されるものではない。また、上述した実施の形態において説明する構造等は、特に明示した場合や明らかに原理的にそれに特定される場合を除いて、この発明に必ずしも必須のものではない。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. When referring to numbers such as the number, quantity, amount, range, etc. of each element in the above-described embodiments, unless otherwise specified or clearly specified in principle, the number referred to The invention is not limited. Also, the structures and the like described in the above-described embodiments are not necessarily essential to the present invention unless otherwise specified or clearly specified in principle.
１　プログラマブルロジックコントローラ（ＰＬＣ）
２　ＨＭＩサーバ装置
３　ＨＭＩクライアント装置
４　コンピュータネットワーク
５　モニタ
５ａ　第１モニタ
５ｂ　第２モニタ
６　ウェブブラウザ
６ａ　第１ウェブブラウザ
６ｂ　第２ウェブブラウザ
７　ＨＭＩ画面
１０　処理回路
１１　ウェブブラウザ処理部
１２　起動位置処理部
１３　画面操作権処理部
１４　パーツ種別処理部
２０　ＰＬＣ信号処理部
２１　ウェブサーバ処理部
２５　ＳＶＧファイル
２６　パーツライブラリ
２７　操作権テーブル
３０　操作ボタン
３１　操作権ランプ
３２　画面遷移ボタン
６１、７１　プロセッサ
６２、７２　メモリ
６３、７３　ネットワークインタフェース
７４　入力インタフェース 1 programmable logic controller (PLC)
2 HMI server device 3 HMI client device 4 computer network 5 monitor 5a first monitor 5b second monitor 6 web browser 6a first web browser 6b second web browser 7 HMI screen 10 processing circuit 11 web browser processing unit 12 starting position processing unit 13 Screen operation authority processing unit 14 Parts type processing unit 20 PLC signal processing unit 21 Web server processing unit 25 SVG file 26 Parts library 27 Operation authority table 30 Operation button 31 Operation authority lamp 32 Screen transition buttons 61, 71 Processors 62, 72 Memory 63, 73 network interface 74 input interface

Claims (8)

  1. 　ウェブサーバと通信する複数のウェブブラウザを実行するＳＣＡＤＡウェブＨＭＩクライアント装置であって、
    　前記ＳＣＡＤＡウェブＨＭＩクライアント装置は、プロセッサと、第１モニタと、第２モニタと、を備え、
    　前記プロセッサは、
    　　前記第１モニタに表示され、産業プラントを監視制御するためのＨＭＩ画面を描画する、第１ウェブブラウザを実行し、
    　　前記第２モニタに表示され、前記ＨＭＩ画面を描画する、第２ウェブブラウザを実行し、
    　　前記ウェブサーバから、前記ウェブブラウザごとに前記ＨＭＩ画面の操作可否を定めた操作権テーブルを取得し、
    　　前記操作権テーブルにおいて、前記第１ウェブブラウザに前記ＨＭＩ画面の操作が許可されていない場合、前記第１ウェブブラウザの前記ＨＭＩ画面に配置された操作パーツを操作不可状態で描画し、
    　　前記操作権テーブルにおいて、前記第２ウェブブラウザに前記ＨＭＩ画面の操作が許可されている場合、前記第２ウェブブラウザの前記ＨＭＩ画面に配置された前記操作パーツを操作可能状態で描画する、ように構成されること、
    　を特徴とするＳＣＡＤＡウェブＨＭＩクライアント装置。     A SCADA Web HMI client device running multiple web browsers communicating with a web server, comprising:
    the SCADA Web HMI client device comprising a processor, a first monitor, and a second monitor;
    The processor
    running a first web browser that renders an HMI screen displayed on the first monitor for monitoring and controlling an industrial plant;
    running a second web browser displayed on the second monitor and rendering the HMI screen;
    obtaining from the web server an operation authority table that determines whether or not the HMI screen can be operated for each web browser;
    if the first web browser is not permitted to operate the HMI screen in the operation authority table, rendering the operation parts arranged on the HMI screen of the first web browser in an inoperable state;
    In the operation authority table, when the second web browser is permitted to operate the HMI screen, the operation parts arranged on the HMI screen of the second web browser are rendered in an operable state. to be composed,
    A SCADA Web HMI client device characterized by:
  2. 　前記プロセッサは、
    　　前記操作パーツが操作可能状態であり、かつ、前記操作パーツにマウスポインタが乗った場合に、前記マウスポインタの形状又は色を操作不可状態から操作可能状態へ変化させ、
    　　前記操作パーツが操作不可状態である場合は、前記操作パーツに前記マウスポインタが乗っても前記マウスポインタの形状又は色を操作不可状態のまま変化させない、ように更に構成されること、
    　を特徴とする請求項１に記載のＳＣＡＤＡウェブＨＭＩクライアント装置。     The processor
    changing the shape or color of the mouse pointer from the inoperable state to the operable state when the operable part is in an operable state and the mouse pointer is placed on the operable part;
    further configured so that when the operation part is in an inoperable state, the shape or color of the mouse pointer remains in the inoperable state even if the mouse pointer is placed on the operation part;
    The SCADA Web HMI client device according to claim 1, characterized by:
  3. 　前記プロセッサは、
    　　前記ＨＭＩ画面の操作可否を示す操作権識別パーツを前記ＨＭＩ画面に表示し、
    　　前記操作権テーブルにおいて、前記第１ウェブブラウザに前記ＨＭＩ画面の操作が許可されていない場合、前記第１ウェブブラウザの前記ＨＭＩ画面に配置された前記操作権識別パーツを操作禁止色で描画し、
    　　前記操作権テーブルにおいて、前記第２ウェブブラウザに前記ＨＭＩ画面の操作が許可されている場合、前記第２ウェブブラウザの前記ＨＭＩ画面に配置された前記操作権識別パーツを操作許可色で描画する、ように更に構成されること、
    　を特徴とする請求項１又は２に記載のＳＣＡＤＡウェブＨＭＩクライアント装置。     The processor
    displaying on the HMI screen an operation right identification part indicating whether or not the HMI screen can be operated;
    drawing the operation authority identification part arranged on the HMI screen of the first web browser in an operation prohibited color when the first web browser is not permitted to operate the HMI screen in the operation authority table;
    When the second web browser is permitted to operate the HMI screen in the operation authority table, the operation authority identification part arranged on the HMI screen of the second web browser is drawn in an operation permission color. be further configured as
    3. The SCADA Web HMI client device according to claim 1 or 2, characterized by:
  4. 　前記プロセッサは、
    　　前記第１ウェブブラウザを終了した後に再び開始する場合、前記第１ウェブブラウザの終了時の位置およびサイズに依らず、前記第１ウェブブラウザを予め定めた初期位置および初期サイズで前記第１モニタに表示し、
    　　前記第２ウェブブラウザを終了した後に再び開始する場合、前記第２ウェブブラウザの終了時の位置およびサイズに依らず、前記第２ウェブブラウザを予め定めた初期位置および初期サイズで前記第２モニタに表示する、ように更に構成されること、
    　を特徴とする請求項１乃至３のいずれか１項に記載のＳＣＡＤＡウェブＨＭＩクライアント装置。     The processor
    When restarting the first web browser after terminating it, the first web browser is displayed on the first monitor at a predetermined initial position and initial size regardless of the position and size when the first web browser is terminated. display and
    When restarting the second web browser after terminating the second web browser, the second web browser is displayed on the second monitor at a predetermined initial position and initial size regardless of the position and size of the second web browser when the second web browser is terminated. be further configured to display,
    4. The SCADA Web HMI client device according to any one of claims 1 to 3, characterized by:
  5. 　産業プラントを構成するフィールド機器群に関する信号をプログラマブルロジックコントローラと送受信し、かつウェブサーバを実行するＨＭＩサーバ装置、および、前記ウェブサーバを介して前記信号を送受信する複数のウェブブラウザを実行するＨＭＩクライアント装置、を備えるＳＣＡＤＡウェブＨＭＩシステムであって、
    　前記ＨＭＩクライアント装置は、プロセッサと、第１モニタと、第２モニタと、を備え、
    　前記プロセッサは、
    　　前記第１モニタに表示され、前記産業プラントを監視制御するためのＨＭＩ画面を描画する、第１ウェブブラウザを実行し、
    　　前記第２モニタに表示され、前記ＨＭＩ画面を描画する、第２ウェブブラウザを実行し、
    　　前記ウェブサーバから、前記ウェブブラウザごとに前記ＨＭＩ画面の操作可否を定めた操作権テーブルを取得し、
    　　前記操作権テーブルにおいて、前記第１ウェブブラウザに前記ＨＭＩ画面の操作が許可されていない場合、前記第１ウェブブラウザの前記ＨＭＩ画面に配置された操作パーツを操作不可状態で描画し、
    　　前記操作権テーブルにおいて、前記第２ウェブブラウザに前記ＨＭＩ画面の操作が許可されている場合、前記第２ウェブブラウザの前記ＨＭＩ画面に配置された前記操作パーツを操作可能状態で描画する、ように構成されること、
    　を特徴とするＳＣＡＤＡウェブＨＭＩシステム。     An HMI server device that transmits and receives signals related to a group of field devices that constitute an industrial plant to and from a programmable logic controller and executes a web server, and an HMI client that executes a plurality of web browsers that transmit and receive the signals via the web server. A SCADA Web HMI system comprising:
    the HMI client device comprising a processor, a first monitor, and a second monitor;
    The processor
    running a first web browser that renders an HMI screen displayed on the first monitor for monitoring and controlling the industrial plant;
    running a second web browser displayed on the second monitor and rendering the HMI screen;
    obtaining from the web server an operation authority table that determines whether or not the HMI screen can be operated for each web browser;
    if the first web browser is not permitted to operate the HMI screen in the operation authority table, rendering the operation parts arranged on the HMI screen of the first web browser in an inoperable state;
    In the operation authority table, when the second web browser is permitted to operate the HMI screen, the operation parts arranged on the HMI screen of the second web browser are rendered in an operable state. to be composed,
    A SCADA Web HMI system characterized by:
  6. 　前記プロセッサは、
    　　前記操作パーツが操作可能状態であり、かつ、前記操作パーツにマウスポインタが乗った場合に、前記マウスポインタの形状又は色を操作不可状態から操作可能状態へ変化させ、
    　　前記操作パーツが操作不可状態である場合は、前記操作パーツに前記マウスポインタが乗っても前記マウスポインタの形状又は色を操作不可状態のまま変化させない、ように更に構成されること、
    　を特徴とする請求項５に記載のＳＣＡＤＡウェブＨＭＩシステム。     The processor
    changing the shape or color of the mouse pointer from the inoperable state to the operable state when the operable part is in an operable state and the mouse pointer is placed on the operable part;
    further configured so that when the operation part is in an inoperable state, the shape or color of the mouse pointer remains in the inoperable state even if the mouse pointer is placed on the operation part;
    The SCADA Web HMI system of claim 5, characterized by:
  7. 　前記プロセッサは、
    　　前記ＨＭＩ画面の操作可否を示す操作権識別パーツを前記ＨＭＩ画面に表示し、
    　　前記操作権テーブルにおいて、前記第１ウェブブラウザに前記ＨＭＩ画面の操作が許可されていない場合、前記第１ウェブブラウザの前記ＨＭＩ画面に配置された前記操作権識別パーツを操作禁止色で描画し、
    　　前記操作権テーブルにおいて、前記第２ウェブブラウザに前記ＨＭＩ画面の操作が許可されている場合、前記第２ウェブブラウザの前記ＨＭＩ画面に配置された前記操作権識別パーツを操作許可色で描画する、ように更に構成されること、
    　を特徴とする請求項５又は６に記載のＳＣＡＤＡウェブＨＭＩシステム。     The processor
    displaying on the HMI screen an operation right identification part indicating whether or not the HMI screen can be operated;
    drawing the operation authority identification part arranged on the HMI screen of the first web browser in an operation prohibited color when the first web browser is not permitted to operate the HMI screen in the operation authority table;
    When the second web browser is permitted to operate the HMI screen in the operation authority table, the operation authority identification part arranged on the HMI screen of the second web browser is drawn in an operation permission color. be further configured as
    SCADA Web HMI system according to claim 5 or 6, characterized by:
  8. 　前記プロセッサは、
    　　前記第１ウェブブラウザを終了した後に再び開始する場合、前記第１ウェブブラウザの終了時の位置およびサイズに依らず、前記第１ウェブブラウザを予め定めた初期位置および初期サイズで前記第１モニタに表示し、
    　　前記第２ウェブブラウザを終了した後に再び開始する場合、前記第２ウェブブラウザの終了時の位置およびサイズに依らず、前記第２ウェブブラウザを予め定めた初期位置および初期サイズで前記第２モニタに表示する、ように更に構成されること、
    　を特徴とする請求項５乃至７のいずれか１項に記載のＳＣＡＤＡウェブＨＭＩシステム。     The processor
    When restarting the first web browser after terminating it, the first web browser is displayed on the first monitor at a predetermined initial position and initial size regardless of the position and size when the first web browser is terminated. display and
    When restarting the second web browser after terminating the second web browser, the second web browser is displayed on the second monitor at a predetermined initial position and initial size regardless of the position and size of the second web browser when the second web browser is terminated. be further configured to display,
    A SCADA Web HMI system according to any one of claims 5 to 7, characterized by:
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